WO1982002343A1 - Systeme de recuperation d'un fluide refrigerant industriel - Google Patents

Systeme de recuperation d'un fluide refrigerant industriel Download PDF

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Publication number
WO1982002343A1
WO1982002343A1 PCT/US1981/000061 US8100061W WO8202343A1 WO 1982002343 A1 WO1982002343 A1 WO 1982002343A1 US 8100061 W US8100061 W US 8100061W WO 8202343 A1 WO8202343 A1 WO 8202343A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
container
outlet opening
separator
lighter liquid
Prior art date
Application number
PCT/US1981/000061
Other languages
English (en)
Inventor
Co Inc Donaldson
Original Assignee
Jahn Darrel D
Quam Robert D
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jahn Darrel D, Quam Robert D filed Critical Jahn Darrel D
Priority to DE19813152669 priority Critical patent/DE3152669A1/de
Priority to AU71732/81A priority patent/AU7173281A/en
Priority to PCT/US1981/000061 priority patent/WO1982002343A1/fr
Priority to EP81901219A priority patent/EP0069729A1/fr
Priority to EP81901243A priority patent/EP0069119B1/fr
Priority to JP56501626A priority patent/JPS603850B2/ja
Priority to GB08225867A priority patent/GB2103962B/en
Priority to AU71705/81A priority patent/AU535134B2/en
Priority to PCT/US1981/000496 priority patent/WO1982002344A1/fr
Publication of WO1982002343A1 publication Critical patent/WO1982002343A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
    • B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0217—Separation of non-miscible liquids by centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C7/00—Apparatus not provided for in group B04C1/00, B04C3/00, or B04C5/00; Multiple arrangements not provided for in one of the groups B04C1/00, B04C3/00, or B04C5/00; Combinations of apparatus covered by two or more of the groups B04C1/00, B04C3/00, or B04C5/00

Definitions

  • the present invention pertains to fluid recovery systems and in particular to industrial recovery systems applying rotational fluid flow principles for removing a coolant fluid from a contaminated mixture.
  • the contaminated mixture typically includes a coolant fluid, generally water-based, lighter liquids such as free and mechanically emulsified oils, and various solids particulate and other impurities.
  • the valuable component is the coolant fluid which acquires a build-up of free or tramp oil within it from leaks in the lubricating and hydraulic systems of the industry and further contamination from the oil-wetted parts being machined.
  • O P1 of free or tramp oils have generally been accomplished with various complex structural arrangements requiring substantial floor areas for operation which are often as expensive to maintain as they are to construct.
  • the present invention is a much simplified recovery system design which achieves a high degree of recovered coolant clarity by methods unknown at present in the art. Further, the present invention answers the pressing needs of modern industries for a recovery system which will significantly increase the useful life of the coolant fluid while eliminating the disposal difficulties involved with the contaminated fluid mixtures.
  • the present invention is a system for separating a heavier coolant fluid from lighter contaminating liquids and various types of solid matter accumulating in the coolant fluid during the particular industrial process.
  • Primary elements of the system include a fluid container having a generally circular cross-section.
  • the container is adapted to receive the contaminated mixture through a top portion of the container.
  • a downwardly sloping bot ⁇ tommost portion extends inwardly to the container's centrally located bottom outlet opening.
  • Along a side of the container is a tangentially directed inlet means through which fluid is returned into the container — together the inlet means and outlet opening impart a fluid vortex to the container's fluid contents.
  • a conduit means connected to the container outlet opening and a separator transfers the fluids discharged from the container to an inlet means in the separator. The transfer is aided by a pump.
  • the separator is generally of the centrifugal type such that a heavier fluid, a lighter liquid and relatively small solids particulates can be separated from each other and separately discharged from the separator.
  • a final primary aspect of the system is the structural means for returning fluid from various locations in the system back to the container through the tangential inlet means. The returned fluid flows into the container from the inlet means in a manner which maintains the fluid vortex so that the free oil or tramp oil is carried upon the surface of the heavier coolant as it is carried out of the container outlet opening by the forces of the fluid vortex.
  • one aspect of the present invention provides a versatile recovery system compatible for use in most types of industries using water-based type coolant fluids.
  • a fluid recovery system design which is successful in achieving a high degree of coolant fluid recovery for reuse of the fluid in the industry on a continuing basis.
  • a further aspect of the present invention mini ⁇ mizes the industrial disposal problems by reclaiming the valuable industrial fluids for reuse and discharging separated contaminants for convenient disposal or other use.
  • a still further aspect of the present invention provides removal of contaminating liquids and solids from the coolant fluid in an efficient and quick manner without damage to the chemical composition of the coolant fluid.
  • Figure 1 is a schematic, elevational view of one embodiment of the present invention with portions broken away and shown in cross-section.
  • Figure 2 is a cross-sectional view of the present invention as seen along lines 2-2 in Figure 1.
  • Figure 3 is a schematic, elevational view of a second embodiment of the present invention.
  • Figure 4 is an elevational view of one aspect of the present invention with portions broken away and shown in cross-section.
  • Figure 5 is a greatly enlarged view of a portion of the present invention seen in Figure 4.
  • a solids dragout arrangement first receives the contaminated fluid mixture into the system 10.
  • the dragout arrangement generally includes a holding tank 11, a standard dragout assembly 12 which removes the solids settling out from the fluid held in the tank 11, and a solids discharge opening 13 through which the "dragged-out" solids are removed from the tank 11.
  • the contaminated fluid leaves the tank 11 by overflowing a portion of the tank 14 through a grid-like screen 15 which prevents foreign objects floating on the surface of the mixture from overflowing the tank 14 with the fluid mix ⁇ ture.
  • the contami ⁇ nated mixture flows into a recovery container 20 through or along a conduit 16 or other suitable transfer struc ⁇ ture.
  • the recovery container 20 in the preferred embodi ⁇ ment has a cylindrical shape with an open top 23 upon which a cover (not shown) can be placed.
  • the bottom portion of the tank is typically frusto-conical in shape or a rounded dish shape so that the walls 22 of the con ⁇ tainer slope downwardly towards a central portion of the container's bottom wall.
  • a circular outlet opening 24 is formed in the central portion of the container's bottom wall.
  • the vertical axis 18 of the container 20 passes through the center of the outlet opening 24.
  • an inlet means 25 which in the preferred embodiment, seen most clearly in Figure 2, is a tube or pipe 34 positioned tangential to the container so that fluid entering the container 20 through the pipe 34 is directed tangentially along a side wall 21 of the container 20.
  • a standard fluid tap 27 is disposed in a lower portion of the con-
  • the tap 27 is essentially a combina ⁇ tion valve 28 and pipe 29, an arrangement which allows the removal of clarified, recovered coolant fluid from the recovery container 20.
  • a conduit 30, e. g. pipe or tubing Secured to the container outlet opening 24 is a conduit 30, e. g. pipe or tubing, which receives fluid flow from the container outlet opening 24 and transfers the fluid to a remote location.
  • a pump 31 Disposed in the conduit 30 of the preferred embodiment is a pump 31.
  • the pre- ferred pump 31 is an air-operated diaphragm pump which is capable of transferring a fluid being carried upon the surface of a second fluid without substantial agitation of the fluids or causing a substantial remixing of the two fluids during the transfer.
  • a standard two-way valve 32 is located upstream from the pump 31 in the conduit 30.
  • the valve 32 is operable to return a portion of the container's dis ⁇ charged fluid to the container's inlet means 25 through a suitable conduit 33, e. g., pipe or tubing allowing a substantial portion of the fluid to pass through into the conduit 30, or all of the discharged fluid can be passed through the valve and into the conduit 30, preventing then any portion from returning to the container.
  • the conduit 30 transfers the container's dis- charged fluids with the assistance of the pump 31 to a separator 35 positioned generally above and proximate to the recovery container 20.
  • the separator 35 used in the preferred embodiment is a liquid/liquid/solid centrifugal separator.
  • the separator has a drum 36 including a cylindrical side wall 37, a top wall member 38, and a frustoconical bottom member 39.
  • the periphery of the bottom member 39 is attached to the bottom edge of the side wall 37 and the center extends into the drum 36.
  • the rotor assembly includes a portion of the stationary inlet manifold 40, a shaft 41, a disc assembly mounted to the shaft 41, and radial spacers 42 secured within the disc assembly.
  • the inlet manifold 40 is fixed to a portion of the housing cover 53, and extends downwardly from the housing cover 53 through the drum top wall member 38 and into the rotor disc assembly.
  • the disc assembly is a nested arrange- ment of spaced apart truncated cone discs 44, including a topmost and bottommost disc 45, 46, respectively.
  • the shape of each disc 44, 45 , 46 is basically a central flat circular portion from which extends downwardly a sloping annular peripheral portion.
  • the sloping portion is the frusto-conical surface of the disc and is shown sloped at a 50° angle from the plane of the flat surface portion.
  • the radial spacers 42 maintain the spaced apart relation ⁇ ship between adjacent discs.
  • each spacer is a finger plate secured between adjacent discs.
  • Each of the discs 44 not including the topmost and the bottommost discs 45, 46, has a circular arrangement of holes or apertures 47 along its conical surface.
  • the topmost disc 45 has its openings 47 formed in the horizontal upper portion thereof generally in vertical alignment with openings 47 of discs 44.
  • the circular patterns of disc apertures 47 are aligned within the assembly to allow a light liquid to flow upward as the disc assembly rotates.
  • the bottommost disc 46 has attached along the underside of its conical portion a set of three fins 48 extending generally downward from the disc surface in the flow path of the incoming contaminated fluid.
  • the fins 48 are spaced apart at substantially equal intervals along the disc surface.
  • a set of paddles 49 is mounted to a rotor shaft head 50 positioned below the truncated portion of the bottommost disc 46 of the rotor assembly.
  • the rotor shaft head 50 is mounted in the drum 36 for coaxial rotation with the rotor assembly.
  • Each paddle 49 is of rectangular shape and extends upward towards the bottommost disc 46 and radially outward from the rotor shaft 41.
  • the paddles 49 are mounted at sub ⁇ stantially equal intervals with respect to each other about the rotor shaft head 50.
  • the drum 36 and the rotor assembly are mounted in a housing 51 having a gener ⁇ ally cylindrical body 52, a top cover 53 and a bottom portion 54.
  • the assembly of nested discs 44, 45, 46 is secured to the rotor shaft head 50 by a plurality of shoulder screws 55.
  • the drum and the rotor assembly are concentrically mounted and rotate independently about a vertical axis 56. It can be seen that the drum 36 rotates on bearings 57 mounted in the housing cover 53 and bear- ings 58 mounted between a drum hub portion 83 and bearing sleeve 84.
  • the rotor assembly is rotatably mounted by bearings 59 mounted between bearing sleeve 84 and rotor shaft 41.
  • a motor (not shown) drives the rotor assembly by means of a belt 60 and a pulley 61 mounted on the rotor shaft 41.
  • the directions of rotation for the drum 36 and rotor assembly are generally counterclockwise when viewed from the top.
  • the con ⁇ taminated fluid drops onto the rotor shaft head 50 where it is thrown or directed outwardly by the rotating set of paddles 49, into contact with the rotating fins 48 extending below the bottommost disc 46 where it is further accelerated towards the drum side wall 37.
  • the drum 36 is then driven by the viscous or shear forces associated with the rotating fluid.
  • the rotor assembly In steady state operation, the rotor assembly is driven at about 3600 rpm. The rotation rate of the drum 36 lags behind that of the rotor assembly by 100-300 rpm. As the drum 36 and rotor assembly rotate a wall of fluid is built up along the side wall 37 of the drum 36. Centrifugal forces cause the solid particles in the fluid to be thrown radially outward to accumulate in the portion of the fluid wall closest to the side wall 37 of the drum 36 can be seen in FIGURE 5. As the wall of fluid builds upward and flow continues to enter the separator 35, the solids heavier than the fluid separate and move to the drum side wall 37. The lighter liquid separates from the heavier liquid within the disc assembly and flows upward along the sur ⁇ faces of the individual discs 44, 46.
  • the topmost disc 45 of the rotor assembly has a greater diameter than the other discs 44, 46.
  • the lip portion formed by the greater diameter prevents the light liquid flow from proceeding to the heavier liquid discharge openings 66 in the drum top wall 38, by trapping the light liquid flow within the disc assembly.
  • the heavier liquid separated from both the light liquid and the solids flows upward near the outer side edges of the disc assembly.
  • the extension means 80 is a fixed structural member for preventing carryover of con- taminated fluid and solids into the disc assembly and liquid discharge openings 47', 66 during the purge cycle. Generally it is an angled, annular member mounted between
  • a portion 81 of the means 80 extends substantially parallel and close to a portion of- the conical surface of the topmost disc 45 in the rotor assembly. It is in this gap between the parallel exten ⁇ sion portion 81 and the conical surface of the top disc 45 that the clarified heavier liquid flows upward and inward. As it passes the parallel portion 81 of the extension means 80 it then proceeds generally upward in the space between the baffle member 62 and an extension portion 82 where it overflows the drum 36 through the circular ar ⁇ rangement of heavier liquid openings 66 in the drum top wall member 38.
  • the separator outlet 68 is connected to the conduit 34 for returning the separated heavier coolant fluid to the container 20 through inlet means 25.
  • the upper collection chamber 64 is defined by the area between housing 51 and the drum top wall member 38.
  • the lower collection chamber 67 is defined by the centrifuge housing body 52 and an internal wall 52' of the housing as shown in FIGURE 5. Each chamber is separate from the other.
  • An air brake 69 shown in FIGURE 4 is used to slow and stop the drum 36 when the purge cycle is ini ⁇ tiated.
  • a pair of purge rods 73 are bolted to the inside of the drum 36 near the side wall 37 so as to extend from the drum top wall member 38 to the inner edge of the baffle 72.
  • the rods 73 are positioned opposite each other in the drum 36.
  • Each rod 73 has a generally circular cross-section, but a longitudinal flat surfaced portion 74 along the rod length is also provided.
  • Each rod's flat surface faces opposite the directions of rotation of the drum and rotor assembly.
  • the contaminated fluid mixture is initially held in the receiving tank 11 where the relatively heavy solids particulate settle out and are removed by the slow-moving dragout 12 which ultimately discharges the solids particu ⁇ late in a relatively dry state through the discharge opening 13 into a collection chamber (not shown). Any floating foreign objects are collected along the grid-like screen 15 in the overflow portion 14 of the receiving tank 11 and can subsequently be removed from the tank 11. As the contaminated fluid mixture overflows the tank 11, it flows into the top portion 23 of the recovery container 20. When the container is partially filled, the pump 31 is turned on thus starting the process of recover- ing the coolant fluid.
  • the pump draws the fluid mixture out the opening 24 and on into the separator 35 where the separation of mixture is carried on as discussed above in the description of the centrifugal separator 35.
  • Sepa ⁇ rated tramp or free oil is discharged from the separator 35 through outlet means 65 where it is deposited into an oil concentrator for further recovery and concentration or into a collection container for disposal.
  • the separated solids par- ticulate exit the separator 35 through outlet means 67 where the material is collected and disposed of. More importantly, however, is” the route of the recovered cool ⁇ ant fluid which is released from the separator 35 through outlet 68 into conduit 34.
  • Conduit 34 carries the recovered coolant fluid flow into inlet means 25 where the flow enters the tank in a plane substantially perpen ⁇ dicular to the vertical axis 18 and near the liquid surface level of the container's contents either just below or just above the fluid surface level.
  • the entering tangential flow of the returning coolant fluid imparts a rotational velocity to the container's fluid contents.
  • This rotational velocity in combination with the natural tendency of draining liquid to swirl creates a fluid vortex and whirlpool in the container.
  • the free oil within the contaminated mixture will natur ⁇ ally separate and rise to the top of the container fluid's surface.
  • various mechanical skimming devices were used to remove the accumulated oil from the surface of the fluid held in prior art settling tanks.
  • a direct result, however, of the vortex forces created within the container 20 of the present invention is the quick drawing of all of the surface collected oil down into the whirlpool's central rotating surface along the vertical axis 18 and out the outlet opening 24 to the preferred air-operated pump for transfer on to the sepa ⁇ rator 35 for final separation within the separator 35 where the coolant fluid and surface-collected free oil are further separated and removed from each other.
  • a portion of the fluid mixture discharged from the container opening 24 is returned to the container 20 prior to its entry into the separator 35. Most of the fluid mixture discharged through opening 24, however, proceeds directly to the separator 35 for final separation and subsequent discharge through respective separator outlets 65, 67 and 68.
  • a two-way, diverter valve 32 directs a portion of the fluid into the conduit 33 where it is pumped back to the container inlet means 25, where it then enters the con ⁇ tainer 20 in a tangential direction with a velocity which creates with the centrally located opening 24 the fluid vortex forces discussed above.
  • the two modes of operation of the present inven ⁇ tion are thus a "recirculating method", shown schematically in Figure 1, which allows a number of passes of the fluid mixture through the system prior to the ultimate recovery of the coolant fluid from the system through the container tap 27, and a “single-pass” method, shown schematically in Figure 3, where a portion of the fluid mixture passes on to the separator while the remain- ing portion is recirculated in order to maintain the fluid vortex within the container for the recovery of the coolant fluid.
  • the final result from the present invention is that with the combination of the fluid vortex-creating container 20 and the centrifugal separator 35, the prior art oil skimming devices are eliminated from the coolant fluid recovery process. Furthermore, the present inven- tion accomplishes the "skimming" process in substantially less time and more effectively than was possible with the prior art devices.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cyclones (AREA)
  • Centrifugal Separators (AREA)

Abstract

Systeme (10) de recuperation d'un fluide refrigerant a partir d'un melange de fluides contamine. Le systeme (10) comprend un recipient (20) structure pour permettre la creation d'un tourbillon de fluide a l'interieur. Le recipient (20) comprend une ouverture de sortie de fond et un moyen d'entree tangentiel (25). Une conduite (30) relie un separateur (35) a l'ouverture de sortie (24) du recipient Une seconde conduite (33, 34) recycle le fluide decharge du conteneur (20) et le renvoie dans le conteneur (20) par l'intermediaire du moyen d'entree (25) pour maintenir le tourbillon de fluide cree a l'interieur du recipient (20). Le liquide plus leger dans le melange monte vers la surface du tourbillon puis est porte par les forces tourbillonnantes sur cette surface vers l'orifice de sortie (24), le liquide plus leger etant alors 'ecume' du fluide refrigerant dans le conteneur (20).
PCT/US1981/000061 1981-01-15 1981-01-15 Systeme de recuperation d'un fluide refrigerant industriel WO1982002343A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE19813152669 DE3152669A1 (de) 1981-01-15 1981-01-15 Rückgewinnungssystem für Flüssigkeiten
AU71732/81A AU7173281A (en) 1981-01-15 1981-01-15 Industrial coolant fluid recovery system
PCT/US1981/000061 WO1982002343A1 (fr) 1981-01-15 1981-01-15 Systeme de recuperation d'un fluide refrigerant industriel
EP81901219A EP0069729A1 (fr) 1981-01-15 1981-01-15 Systeme de recuperation d'un fluide refrigerant industriel
EP81901243A EP0069119B1 (fr) 1981-01-15 1981-04-16 Systeme de recuperation de fluides
JP56501626A JPS603850B2 (ja) 1981-01-15 1981-04-16 空気心を中断する中断装置及びこれを使用する分離装置
GB08225867A GB2103962B (en) 1981-01-15 1981-04-16 Fluid recovery system
AU71705/81A AU535134B2 (en) 1981-01-15 1981-04-16 Fluid recovery system
PCT/US1981/000496 WO1982002344A1 (fr) 1981-01-15 1981-04-16 Systeme de recuperation de fluides

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1981/000061 WO1982002343A1 (fr) 1981-01-15 1981-01-15 Systeme de recuperation d'un fluide refrigerant industriel
WOUS81/00061810115 1981-01-15

Publications (1)

Publication Number Publication Date
WO1982002343A1 true WO1982002343A1 (fr) 1982-07-22

Family

ID=22161044

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US1981/000061 WO1982002343A1 (fr) 1981-01-15 1981-01-15 Systeme de recuperation d'un fluide refrigerant industriel
PCT/US1981/000496 WO1982002344A1 (fr) 1981-01-15 1981-04-16 Systeme de recuperation de fluides

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/US1981/000496 WO1982002344A1 (fr) 1981-01-15 1981-04-16 Systeme de recuperation de fluides

Country Status (6)

Country Link
EP (2) EP0069729A1 (fr)
JP (1) JPS603850B2 (fr)
AU (2) AU7173281A (fr)
DE (1) DE3152669A1 (fr)
GB (1) GB2103962B (fr)
WO (2) WO1982002343A1 (fr)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
JPS60154961U (ja) * 1984-03-26 1985-10-16 東京応化工業株式会社 露光用版材載置盤
GB2158741B (en) * 1984-05-14 1988-08-17 Hydro Int Ltd Separation of components of a fluid mixture
US4857197A (en) * 1988-06-29 1989-08-15 Amoco Corporation Liquid separator with tangential drive fluid introduction
US5186332A (en) * 1991-06-14 1993-02-16 The Black Clawson Company Paper stock screening apparatus having heavy rejects trap
US7520997B2 (en) 2004-09-04 2009-04-21 Antoun Gregory S Separation devices, systems and methods for separation of particulates from liquid
SE530921C2 (sv) * 2007-03-14 2008-10-21 Alfa Laval Corp Ab Komprimerbar enhet för en centrifugalseparator
WO2023005433A1 (fr) * 2021-07-28 2023-02-02 苏州爱恩机械有限公司 Dispositif de purification de fluide de nettoyage efficace

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US2360551A (en) * 1942-02-20 1944-10-17 Lewis H Durdin Sewage treatment method and apparatus
US3456798A (en) * 1968-07-16 1969-07-22 Howard D Urdanoff Method and apparatus for clarifying liquids
US3528551A (en) * 1967-05-30 1970-09-15 Schlumberger Cie N Filtering installation,more particularly for cutting tool cooling liquids
US3540588A (en) * 1967-12-13 1970-11-17 Barnes Drill Co Method and apparatus for cleaning liquid
US3596769A (en) * 1970-05-04 1971-08-03 Thermel Inc Filter for coolant oils for cutting tools
US3679051A (en) * 1970-02-26 1972-07-25 Prab Conveyors Improved metal and plastic chip wringing apparatus and process
US3840120A (en) * 1973-03-05 1974-10-08 Barnes Drill Co Apparatus for separating particles from liquid
DE2411076A1 (de) * 1974-03-08 1975-09-18 Joachim Lange Verfahren und vorrichtung zum reinigen von mit schleifspaenen, schleifstaub und dgl. verschmutztem oel hoher viskositaet
US4168232A (en) * 1977-12-08 1979-09-18 Allen Mark K Method and apparatus for recycling water in a car wash

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US3529767A (en) * 1962-02-28 1970-09-22 Pennwalt Corp Centrifuge for separating solids from liquid
NL129251C (fr) * 1964-01-24 1970-07-15
US3598111A (en) * 1968-12-09 1971-08-10 Health Technology Corp Technique and apparatus for measuring and monitoring the mechanical impedance of body tissues and organ systems
US3764005A (en) * 1971-02-22 1973-10-09 Boise Cascade Corp Hydrocyclone pulp cleaner
US3743095A (en) * 1972-04-20 1973-07-03 United Aircraft Corp Vortex flow system for separating oil from an oil-water mixture
DE2220047A1 (de) * 1972-04-24 1973-11-08 Iko Gmbh & Co Kg Waschwassererklaerung bei aufbereitungsanlagen
US4265740A (en) * 1979-12-17 1981-05-05 Ingersoll-Rand Company Centrifugal separator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2360551A (en) * 1942-02-20 1944-10-17 Lewis H Durdin Sewage treatment method and apparatus
US3528551A (en) * 1967-05-30 1970-09-15 Schlumberger Cie N Filtering installation,more particularly for cutting tool cooling liquids
US3540588A (en) * 1967-12-13 1970-11-17 Barnes Drill Co Method and apparatus for cleaning liquid
US3456798A (en) * 1968-07-16 1969-07-22 Howard D Urdanoff Method and apparatus for clarifying liquids
US3679051A (en) * 1970-02-26 1972-07-25 Prab Conveyors Improved metal and plastic chip wringing apparatus and process
US3596769A (en) * 1970-05-04 1971-08-03 Thermel Inc Filter for coolant oils for cutting tools
US3840120A (en) * 1973-03-05 1974-10-08 Barnes Drill Co Apparatus for separating particles from liquid
DE2411076A1 (de) * 1974-03-08 1975-09-18 Joachim Lange Verfahren und vorrichtung zum reinigen von mit schleifspaenen, schleifstaub und dgl. verschmutztem oel hoher viskositaet
US4168232A (en) * 1977-12-08 1979-09-18 Allen Mark K Method and apparatus for recycling water in a car wash

Also Published As

Publication number Publication date
EP0069119B1 (fr) 1990-01-10
AU7173281A (en) 1982-08-02
EP0069119A1 (fr) 1983-01-12
JPS603850B2 (ja) 1985-01-31
GB2103962A (en) 1983-03-02
AU535134B2 (en) 1984-03-01
DE3152669A1 (de) 1983-02-10
GB2103962B (en) 1985-04-17
EP0069729A1 (fr) 1983-01-19
WO1982002344A1 (fr) 1982-07-22
AU7170581A (en) 1982-08-02
JPS57502093A (fr) 1982-11-25
EP0069119A4 (fr) 1986-06-05

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